Releasing coupling



April 8, 1930. F. w. REIMOLD 1,754,048

RELEASING COUPLING Filed July 2, 1928 INVENTOR WITNESSES E-e0l W'ReimoldATTORNEY Patented Apr. 8, 1930 I UNITED STATES PATENT OFFICE FRED W.REIMOLCD, OF NEWARK, NEW JERSEY RELEASING COUPLING original applicationfiled. August 22, 1927, Serial No. 214,644. Divided and this applicationfiled. July 2,

1928. Serial No. 289,927.

This invention relates to a releasing coulateral lugs 17 at one end, andan arcuate pling which is divided from the subject matnotch 18 at theopposite end which opens ter of my co-pending application filed Augustthrough one sideedge thereof. The members 22, 1927, Serial No. 214,644.or plates 16 are arranged respectively at the The coupling has a widerange of applicatop and bottom sides of the member in fric- 5 tion forthe purpose of releasing or uncoutional contact therewith, and areretained in pling cooperative appurtenances, to avert inplace forpivotal movement by means of a bolt jury to or the breaking of partsthereof, when 19 and nut 20 which also serve to keep the a pulling forceto which one of the appurtemembers 16 in frictional contact with said 10nances is subjected by the other one, becomes member 15, under a certainamount of resistexcessive from any cause in the ordinary use ingpressure. 1 A bolt 21 carried by the memof said appurtenances. ber 15projects upwardly so as to be received The coupling may be usedadvantageously in the notches 18 in the members or plates 16.

in conjunction with a pulling vehicle, such as The bolt 21 is providedwith a nut 22 to hold 15 atractor, and a drawn vehicle, such as aplow,the same in place. The bolt 21 serves as a 05 for the purpose ofreleasing the drawn vehistop to limit the pivotal movement of the ole orplow, when the latter encounters a rock members or plates 16 to normallyset positions or other obstruction in the ground, to avert as shown inFig. 1. A coupler member 23 of possible injury or breaking of parts.substantially U-shape, having oppositely di- 2 With the foregoing andother objects in rected terminals 24 is securely held on the view, theinvention resides in the provision block 10 by a strap 25. One of theterminals of a coupling which will be of practical and 24of the member23 is adapted to engage one rugged construction, one which will bereliof the lugs 17 of the upper plate or member able in operation, andone which will be of 16, and the other terminal 24 is adapted to 535long lif engage one of the lugs 17 of the lower member 7 The nature ofthe invention and its distinor plate 16. It will be apparent that theterguishing features and advantages will appear minals 24 are disposedrespectively at oppowhen the following specification is read in sitesides of the point of pivotal connection of connection with theaccompanying drawing, the members or plates 16 with the member 15.

30 in which The arrangement of the parts is such that Figure 1 is a planview of the coupling. when the members or plates 16 and the cou- Fig. 2is a side view. pler member 23 are subjected to an unusual Fig. 3 is aplan view illustrating parts of or excessive pulling force, the members16 the coupling in a releasing relationship. will move on the pivotalforded by the bolt :33 In the illustrated embodiment of the in- 19,cause movement of the members 16 in opvention which is by way ofexample, there is posite directions, and consequent disengageshown ablock 10 which constitutes a part of ment of the terminals 24 with thelugs 17,

a drawn vehicle or implement such as a plow, thereby releasing the drawnvehicle or imand a clevis 11 adapted for connection with plement. Inthis way injury or the breaking 4 a part of a pulling vehicle such as atractor. of parts will be averted. It will be apparent In the presentinstance the clevis 11 consists that when two of the lugs 17 becomeworn, the of a plate 12 having a series of holes therein, remaining twolugs 17 may be employed in and a bar 13 having a series of holes thereinconjunction with the coupler terminals 24, for the accommodation ofsuitable pins 14 thereby prolonging life of the members or which extendthrough the holes in the plate plates 16.

12 and timber 13 to obtain the desired draft. It is to be understoodthat the releasing A member 15 is rigidly connected at one end couplermay be employed for hitching or couwith the bar 13. Members 16 in theform of pling drawn vehicles to pulling vehicles, and plates areprovided. The plates 16 are simithat the device may be also applied incon- 5 lar in construction, and each is provided with junction with anyother cooperative appurtenances, and that the necessary changes ormodifications in the details within the scope of'the claims hereuntoappended, may be resorted to for carrying out the results looked for.

I claim:

1. In a releasing coupling, the combination with a clevis plate, ofmembers, means 7 which connects said members with said clevis plate forpivotal movement and which subjects said members to a predeterminedamount of pressure, means limiting the movement of said members tonormally set positions, a relatively fixed coupler member, and coactingmeans on said coupler member and the first mentioned members, saidcoacting means being disengageable to release said coupler member, bythe pivotalmovement of the first mentioned members, when all of saidmembers are subjected to an excessive pulling force.

2. In a releasing coupling, the combination with a clevis plate, ofmembers, means which connects said members with said clevisplate forpivotal movement and which subjects said members to a predetermined.amount of pressure, means on the clevis plate limiting the pivotalmovement of said members to normally set positions, a relatively fixedcoupler member, and coacting means on said coupler member and the firstmentioned members, v

said coacting means being disengageable to release said coupler member,by the pivotal movement of the first mentioned members,

. when all of said members are subjected to an excessive pulling force.

FRED W. REIMOLD.

